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Ishihara book consists of a number of colored plates to provide color blindness test on each plate is printed a circle made of many different sized dots of slightly different colors, spread in a random manner. Within the dot pattern and differentiated only by color is a number or shape. more...
Ishihara’s color perception test charts are recognized internationally as highly reliable method of determining color deficiency. With normal color perception, the images and numbers will all be visible. Each color test plate in this hard bound. • Book is specially printed to measure incrementally higher more...